Lacquering-machine.



W. W. VINCENT.

LACQUERING MACHINE.

APPLICATION FILED JAN.4,1909.

Patented Dec. 2, 1913.

2 SHEETS-SHEET 1.

W. W. VINCENT.

LAOQUERING MACHINE.

APPLICATION IILIJD JANA, 1909.

1,080,392, Patented Dec. 2, 1913.

2 SHEETSSHEET 2.

UNITED STATES PATENT OFFICE.

WILLIAM WRIGHT VINCENT, OF KENOSHA, WISCONSIN, ASSIGNOR TO THE SIMMONSMANUFACTURING COMPANY, OF KENOSHA, WISCONSIN, A CORPORATION OF WIS-CONSIN.

To all whom it may concern Be it known that I, IVILLIAM 'W. Vnvoinv'r, acitizen of the United States, residing at Kenosha, in the county ofKenosha and State of Wisconsin, have invented certain. new and usefulImprovements in Lacquering-Machines, of which the following is aspecification.

Devices or machines for the carrying out of the process of lacqueringbedsteads set out in my Patent No. 908,911, granted J anuary 5, 1909,form the subject matter of this present application.

One of the objects of the invention is the provision of an appliancecapable of holding and supporting the parts of brass bedsteads or othertarnishable pieces during the application of the lacquer thereto, thetubes or other parts of the bedstead being heated by electricity duringthe coating operation. Preferably means are provided for rotating orrevolving the tube or other part being operated upon to bring all theportions or surfaces thereof into position for the application of thelacquer by the operator. This turning may be done either manually or bypower, as desired. The holders for the burnished tubes are desirablymade tapered, whereby to secure an effective electrical contact betweenthem and the tube or mount, and in some forms I provide such holders orcenters with small extensions or pins adapted to temporarily support apolished tube or trimming during the adjustment of one or more of theholders to the piece to be lacquered or its removal therefrom. Inaddition, suitable means are supplied to send a heating current ofelectricity through the holders and tube or mount, an electric switch orrheostat being provided for the control of the current. The tail stockis preferably slidable toward and from the head stock so as to adapt themachine for use with tubes of different lengths, and in such tail stockI yieldingly mount the holder so that the tube or bedstead trimming willbe held between the pair of holders by spring pressure. Means are alsoprovided for locking the tail stock against backward movement, asotherwise the spring under compression would have a tendency to shiftthe same rearwardly, relieving the necessary or desired pressure of theholders on the tube.

In the accompanying drawings I have Specification of Letters Patent.

Application filed January 4, 1909.

Patented Dec. 2, 1913.

Serial No. 470,651.

shown a preferred embodiment of the invention, and in these drawingsFigure 1 is a perspective view of the machine; Fig. 2 is a fragmentaryback view of the device, certain parts being shown in section; Fig. 3 isa plan view of the construction shown in Fig. 2; Fig. 4 is a fragmentaryend elevation of the appliance; Fig. 5 is a section on line of Fig. 4,the parts being viewed in the direction indicated by the arrows, andFig. (3 shows modified forms of holders in engagement with a trimming ormount for a brass bedstead.

The machine comprises a longitudinal I- bcam 10 supported on a pair ofbrackets or standards l111 and at the head end of this Ibeam I provide acasting 12 supplied with a pair of alincd bearings 13 and l t in which ashaft 1:") is adapted to rotate, the shaft having a loose belt-drivenpulley 16 which may be operatively-connected to the shaft by a clutchmechanism 17 operated by a bell-crank lever 18 fulcrumed at 19, one armof the lever being disposed below an operating cam 20 on a shorttransverse shaft 21 equipped on the front side of the machine with aturning handle 22. Also mounted on this shaft 15 is a hand wheel 23 anda cylindrical electrically-conducting terminal 241 bearing on the outerface of which is a pair of brushes or contacts 25 connected to aninsulated wire or cable 26, the brushes being insulated from the I-beam10 by a strip 27 of fiber or the like, as is clearly indicated. Thisterminal 24 has an axial conical-shaped hole 28 (Fig. 3) which receivesthe correspondingly-shaped shank 29 of a tube or similar holder orcenter 30 conically recessed on its outer face at 31 and supplied with afor wardly-projectiug pin or extension 32, as is shown in Fig. 2. Itshould, therefore, be apparent that the shaft 15 may be rotated eitherby power through the pulley 1G and the clutch mechanism, or by hand bymeans of the wheel 23, and that the rotation of this shaft istransmitted to the terminal 24 and the tube holder 30.

Slidingly mounted on the top of the I-beam 10 is a tail stock casting 33having at its top an elongated enlargement 34L supplied with acylindrical. cavity 35 coaxial with the shaft 15 and the parts carriedthereby, this cavity receiving a coil expansion spring 36 which at oneend abuts against the inner wall of the cavity and at the other endbears against a member 37 slidable in the recess and supplied at itsouter end with a cylindrical electrical terminal 38, substantially likethe one characterized 24, this terminal also having a conical hole 39receiving the conical shank 40 of a holder 41 like the holder 30,including the feature of the pin or extension 32. Insulatingly mountedon the casting 33 I provide a block 42 having a pair of electricalbrushes or contacts 43' hearing on the cylindrical surface of theterminal 38, the block being provided on the back side of the machinewith a springpressed contact 44 pressed against the outer plane face ofa conducting bar 45 mounted on the back of the I-beam 10 and insulatedtherefrom, as is indicated. To conduct current to this bar I provide theinsulated wire or cable 46, connected to the bar in any suitable mannerat 47 or any other convenient point.

A shaft 48 is rotatably mounted in the pair of transverse alinedbearings 49 on the casting 33, the shaft bet-ween these bearings havingfixed thereto a pinion 50, the teeth of which mesh with those of alongitudinal rack 51 mounted on the Lbeam 10 between its upstandingflanges. I fix to the end of the front bearing 49 and concentricallywith the shaft 48 a stationary ratchet wheel 52, and on the shaft 48,rigid therewith, is an upwardly-extended arm 53. A short shaft or pin 54is rotatable in a hole or bearing in the outer end of the arm 53, thispin having fixed to its inner end and overlapping the teeth of ratchet52 a pawl 55 adapted to coact with the teeth. Through the other end ofthis pin or shaft I pass a cotter pin 56 and connect the eye thereof bya coil contractile spring to the hub 57 of a rotary member 58 suppliedwith a plurality of handles 59, thus hub being loosely mounted on theshaft 48. This hub 57 is slotted at 61 to permit the arm 53 to extendtherethro-ugh, the slot being slightly wider than the arm, whereby thehub is permitted to have a limited rocking movement relative to theshaft 48 and the arm 53 without moving them. Secured to the inner end ofits hub by means of screws 62 is a round plate or disk 63 having a notch64 which permits the pawl 55 to normally engage the teeth 52 of theratchet, but if the hub and handles 59 are turned, which turning ispermitted by the width of the slot, relative to the shaft and arm 53 sothat the pawl 55 no longer resides in the notch, then the pawl will befreed from the ratchet and backward movement of the same will bepermitted, it being understood that the pawl is of sufiicient width tooverlap not only the ratchet 52 but also the notched plate 63, as isclearly indicated in Fig. 4. Owing to the contraction of the spring 60which acts to force the pawl inwardly to engage the teeth of theratchet, it also swings the hub 57 and handles 59 into such position asto bring the notch 64 of the plate 63 beneath the pawl, which positionof the parts of course allows thepawl to cooperate with the ratchet.

The operation of this machine is substantially as follows: Assuming thatthe tube 65 intended to form part of a brass bedstead, and havingapertured pommels or gromets 66 in its opposite ends, is to belacquered, the tube is applied to the holder or center 30 so that thepin or extension 32 extends through the hole of the pommel 66 and thetube is then held in horizontal position during the advance of the tailstock until the pin 32 of the tail holder 41 en gages the pommel at theother end of the tube, the latter being now supported at its oppositeends by the two pairs of pins. Further advance of the tail stock, due tothe rotation of the member 58 by its handle 59, brings the tapered orconical faces 31 of the two holders 30 and 41 intoeflective engagementwith the ends of the tube, and the tail stock is advanced sutficientlyto put the spring 36 under some compression. During this forward travelof the tail stock the rotary turning of the hub 57 is trans mitted tothe shaft 48, gear 50, and tail stock casting by the rear wall of therecess 61 striking the arm 53, the pawl 55 riding idly over the inclinedratchet teeth, as will be readily understood. As soon as the operatorreleases the handles 59 the spring 60 is unable to force the tail stockrearwardly, because the pawl 55, by engagement with one of the teeth ofthe ratchet 52, prevents turning of the gear 50. The operator now closesan electrical switch 67 at the head end of the machine which controlsthe primary coil of an electric transformer through the wire connections68, the secondary of such transformer sending its current through thewires 26 and 46 to the brushes 25 and 43 and terminals 24 and 38, fromwhich it traverses and heats the tube. After the tube has been raised tothe proper temperature, which takes but a very few seconds, the operatorapplies superposed or overlying coats of lacquer by means of a brush,the turning of the tube, in order that the entire surface may becovered, being accomplished by the manual rotation of the handle 23, theturning of which of course rotates the tube and terminals. If the partbeing lacquered has ,a mount or trimming 69, it may be desirable,instead of coating the same by stroking the brush longitudinally as isfeasible in a tube of uniform diameter, to rotate the tube by powerderived through the pulley 16, the lacquer being applied to the mount ortrimming during such comparatively rapid rotation. To remove thefinished tube it is simply necessary for the operator to turn thehandles 59 in the opposite direction, the initial movement of the hub ofthe handle acting to turn the disk 63 so as to lift the pawl 55 out ofthe notch 64 and away from the teeth of the ratchet 65, whereuponfurther turning of the handles retracts the tail stock. A comparativelyslight backward movement of this tail stock frees the tube from theholders or centers 30 and 41 so that it is supported through its pommelson the pair of pins 32, which position of the tube permits the operatorto grasp one or more of its ends internally by any suitable appliancewithout injuring its polished finished surface. Fur ther backwardmovement of the tail stock frees the tube entirely so that it can bereadily lifted out.

The holders 30 and 41, as will be readily understood, are easilydetachable and removable from the terminals 2% and 38, and in order thatthis single form of machine may be used for lacquering the various partsof a bedstead, I keep a supply of holders or centers adapted to fit suchparts, and in Fig. 6 I have shown a pair of holders or centers 70 and 71having conical or tapered heads of different diameters adapted todirectly fit in the opposite ends of a hollow mount or trimming 72, theuse of which holders or centers enables me to obtain a suflicientelectrical contact with the ends of the trimming or mount by forcing theholders toward one another.

WVhereas herein I have set forth in detail the preferred embodiment ofthe invention, it is to be understood that the invention is susceptibleof a variety of embodiments, and that it is not limited and restrictedto the precise structural features herein set out.

I claim:

1. In a lacquering machine, the combination of a base, a pair of holdersmounted thereon and adapted to support the piece to be lacquered betweenthem, each of said holders having a concave face and a central pin orextension thereon adapted to engage and enter the end of the piece heldthereby, means for bodily adjusting one of said holders on said basetoward and from the other, spring means normally urging one of saidholders toward the end of the piece engaged thereby, means forelectrically heating the piece to be lacquered while held by saidholders, and means for effecting rotation of the piece to be lacqueredduring the heating thereof, substantially as described.

2. In a lacquering machine, the combination of a base, a pair of holdersmounted thereon and adapted to support at its ends the piece to belacquered, one of said holders being bodily movable on said base towardand from the other, mechanism, including a handle, for moving saidlast-named holder toward its companion holder, automatically actingdetent mechanism to prevent backward movement of said movable holder inany of its adjusted positions, detent releasing means operated by abackward movement of said handle for permitting backward travel of saidmovable holder, means for effecting rotation of the piece to belacquered while engaged by said holders, and means for passing anelectrical heating current through the piece to be lacquered whileengaged by said holders, substantially as described.

WILLIAM WRIGHT VINCENT.

Witnesses:

PHILIP FREDERICK, CLARENCE E. HAWLEY.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, I). C.

